I would like to define multiple @SpringBootApplication configurations that should load different packages. So that I can only load certain parts of the application, depending on the -Dspring.profiles.active= property.
Eg, the following MyApp1 startup class should only auto load classes under com.myapp.config1 subpackages:
package com.myapp.config1
@SpringBootApplication
@Profile("app1")
public class MyApp1 {
public static void main(String[] args) {
SpringApplication.run(MyApp1.class, args);
}
}
And another package aside:
package com.myapp.config2
@SpringBootApplication
@Profile("app2")
public class MyApp2 {
public static void main(String[] args) {
SpringApplication.run(MyApp2.class, args);
}
}
Problem: I cannot have multiple main() in multiple classes, as I lateron want to run my app with mvn spring-boot:run. How could this be solved?
CodePudding user response：
If you want to load different packages depending on a profile you should instead define different configuration classes that are annotated with different @ComponentScan annotations.
@Configuration
@ComponentScan("bar.foo")
@Profile("app1")
public class loadApp2 {
}
@Configuration
@ComponentScan("foo.bar")
@Profile("app2")
public class loadApp1 {
}
This is actually the recommended way of setting up configuration and is called "slicing" and is documented in the spring boot docs
CodePudding user response：
If I understand your question properly, then you want to run different class based on profiles, then you can have profile like below:
@Configuration
@ComponentScan("abc")
@Profile("app1")
public class MyApp1 {
//
}
@Configuration
@ComponentScan("xyz")
@Profile("app2")
public class MyApp2 {
//
}
Now in your SpringBootapplication:
@SpringBootApplication
public class SpringApp {
@Autowired
Environment env;
public static void main(String[] args) {
if (Arrays.asList(env.getActiveProfiles()).contains("app1"))
SpringApplication.run(MyApp1.class, args);
else
SpringApplication.run(MyApp2.class, args);
}
}
CodePudding user response：
Could solve it as follows.
package com.myapp
@SpringBootApplication(scanBasePackages = "com.myapp.config")
public class MyApp {
public static void main(String[] args) {
SpringApplication.run(MyApp.class, args);
}
}
Which loads config:
package com.myapp.config
@Configuration
@Profile("app1")
@ComponentScan(basePackages = "com.myapp.app1")
public class App1Config {
//only load classes from app1 package
}
@Configuration
@Profile("app2")
@ComponentScan(basePackages = "com.myapp.app2")
public class App2Config {
//only load classes from app2 package
}
CodePudding user response：
You could specify the main class in the spring boot plugin configuration. I am not sure if you are using gradle or maven... so cant tell you the exact config.